#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>

int main()
{
	
	/*printf("%zd\n", sizeof('c'));
	int a = 4;
	int b = 5;
	//int c = 0;
	//c = a + b;
	//printf("%d", c);*/
	//float x;
	//int i;
	//x = 3.6;
	//i = (int)x;
	//printf("x=%f,i=%d\n", x, i);
	int i, p;
	p = 1;
	i = 2;
	while (i <= 5)
	{
		p = p * i;
		i = i + 1;
	}
	printf("%d\n", p);

	
	return 0;
}